NDLI: Bi-directional pixel-value differencing approach for RGB color image

Content Provider	IEEE Xplore Digital Library
Author	Himakshi Singh, R.K. Verma, H.K. Singh, C.K.
Copyright Year	2013
Description	Author affiliation: Dept. of Comput. Sci. & Eng., NIT Jalandhar, Jalandhar, India (Himakshi; Singh, R.K.; Verma, H.K.) \|\| Dept. of Comput. Sci. & Eng., SSCET Badhani, Badhani, India (Singh, C.K.)
Abstract	A two layer data hiding method for RGB color image has been proposed in this paper. It is an enhancement of Wu and Tsai's method (PVD) and J. K. Mandal's method (Color Image Steganography Based on Pixel Value Differencing in Spatial Domain). J. K. Mandal's method will be referred as “Color PVD” in this research paper. Proposed method is relatively secure and efficient in term of data hiding capability and quality of stego image. Caesar cipher is considered to play the role of security wall for this approach. Difference of pixel pairs (non overlapping consecutive pixels in the cover image) drives the data hiding capacity of this method. Two layer data hiding and LZW compression technique are also involved to enlarge the data hiding capability of this method. In second layer of data hiding, left pixel of the pixel pair is considered as right pixel and viceversa to improve the stego image quality. Stego image in this technique is totally indistinguishable from the original image by the human eye and it is secure against the RS detection attack. Beside this it also avoids falling of boundary problem of the pixels.
Starting Page	47
Ending Page	52
File Size	326959
Page Count	6
File Format	PDF
e-ISBN	9781479901920
DOI	10.1109/IC3.2013.6612248
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-08-08
Publisher Place	India
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Ciphers PSNR Compression Cover image Color Stego image LZW Image quality Steganography Image coding Image color analysis Caesar cipher Cryptography RS detection attack PVD
Content Type	Text
Resource Type	Article

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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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